126388685655 has 12 divisors (see below), whose sum is σ = 219073721880. Its totient is φ = 67407298992.

The previous prime is 126388685623. The next prime is 126388685693. The reversal of 126388685655 is 556586883621.

126388685655 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 8 + 8 + 68 + 565 + 5 = 666.

It is not a de Polignac number, because 126388685655 - 2⁵ = 126388685623 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 126388685592 and 126388685601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1404318685 + ... + 1404318774.

It is an arithmetic number, because the mean of its divisors is an integer number (18256143490).

Almost surely, 2^126388685655 is an apocalyptic number.

126388685655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126388685655 is a deficient number, since it is larger than the sum of its proper divisors (92685036225).

126388685655 is a wasteful number, since it uses less digits than its factorization.

126388685655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808637470 (or 2808637467 counting only the distinct ones).

The product of its digits is 82944000, while the sum is 63.

The spelling of 126388685655 in words is "one hundred twenty-six billion, three hundred eighty-eight million, six hundred eighty-five thousand, six hundred fifty-five".